{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["biomedical", "concept or principle", "manufacturing standard"], "input": "A comprehensive overview on powder bed fusion process is presented in this review paper ."}
{"biomedical": [], "concept or principle": [], "manufacturing standard": []}